Formic acid (hco2h) has a dissociation constant of 1.8 _ 104 m. the acid dissociates 1: 1. what is the [h+] if 0.1 mole of formic acid is dissolved in 1.0 liter of water? use a scientific calculator.

0.9 _ 10^-3 m

4.2 _ 10^-3 m

7.9 _ 10^-3 m

15 _ 10^-4 m

M

Explanation: The equilibrium reaction for dissociation of weak acid is,

initially conc.       c                          0         0

At eqm.              

The expression for dissociation constant is:

when is very very small the, the expression will be,

Now put all the given values in this expression, we get

yes definetly because you are using energy

a polar bond is formed when electrons are shared unevenly between atoms